Jaw Flexible Shaft Couplings

A flexible spider insert joins the hubs of these jaw flexible shaft couplings and acts as a cushion between them to absorb shock and vibration, which reduces the force of impact loads. These couplings can accommodate small amounts of angular misalignment (shafts are set at an angle to each other), parallel misalignment (shafts are misaligned but parallel), or axial misalignment (shafts are pulled apart or pushed together) when the coupling is connected between two shafts.

Spider inserts can be replaced when they become worn or damaged, and the coupling will continue to operate even if the spider insert fails, allowing the drive system to be properly shut down before replacing the spider. You can exchange the current insert in a coupling for another insert of the same style but in a different material to adapt the coupling for a variety of applications. Jaw flexible shaft couplings do not require lubrication and are commonly used on semiconductor, solar energy, and medical equipment.

Set-Screw Mount Hubs

Spider Inserts

Set-Screw Mount Hubs

Select two of these hubs and place a compatible spider insert between them to create a jaw flexible shaft coupling for your application. The hubs attach to shafts using the included set screws. Once the coupling is in place, the set screw is tightened until it bites into the shaft material. For best results, the set screw should be made from a material that is harder than the shaft material.

Iron With Keyway

1 3⁄32 in Hub OD

1 3⁄4 in Hub OD

1 3⁄8 in Hub OD

2 1⁄8 in Hub OD

2 17⁄32 in Hub OD

3 11⁄32 in Hub OD

3 3⁄4 in Hub OD

4 1⁄2 in Hub OD

5 in Hub OD

Iron Without Keyway

1 3⁄32 in Hub OD

1 3⁄4 in Hub OD

1 3⁄8 in Hub OD

2 1⁄8 in Hub OD

Aluminum With Keyway

1 3⁄4 in Hub OD

1 3⁄8 in Hub OD

2 1⁄8 in Hub OD

2 17⁄32 in Hub OD

3 11⁄32 in Hub OD

Aluminum Without Keyway

1 3⁄32 in Hub OD

1 3⁄4 in Hub OD

1 3⁄8 in Hub OD

2 1⁄8 in Hub OD

Stainless Steel With Keyway

1 3⁄4 in Hub OD

2 1⁄8 in Hub OD

2 17⁄32 in Hub OD

3 11⁄32 in Hub OD

Spider Inserts

Install these spider inserts between two compatible hubs to create a jaw flexible coupling for your application.